What this 16-bit MCU brings to a metering design
It is part of the MSP430F6xx series, which targets energy measurement and smart-grid applications. The distinguishing feature is the dual ADC block: three 24-bit sigma-delta converters paired with eight 10-bit successive-approximation channels, allowing simultaneous high-resolution current/voltage sensing and auxiliary monitoring on a single chip.
Obsolete — what that means for procurement
The MSP430F6731IPZ carries an obsolete lifecycle status. Texas Instruments has discontinued this specific package variant (100-LQFP), and no last-time-buy window is indicated in the available records. Any new design should migrate to a current-production MSP430F6xx variant or a pin-compatible alternative within the family.
Peripheral set and connectivity
On-chip peripherals include a brown-out detect and reset, DMA controller, LCD driver, power-on reset, PWM timer, and watchdog timer. With 72 general-purpose I/O lines in the 100-LQFP package, the device can handle a segmented LCD display, multiple sensor inputs, and a communication backhaul without external port expanders.
Package and mounting considerations
The MSP430F6731IPZ is supplied in a 100-pin LQFP package with a 14x14 mm body (100-LQFP). It is a surface-mount device intended for reflow soldering.